The problem of dating quartz 1: Spectroscopic ionoluminescence of dose dependence

Georgina King, Adrian Anthony Finch, Ruth Alison Joyce Robinson, D E Hole

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Abstract

A suite of quartz samples of different provenances, irradiation, thermal and depositional histories were analysed using spectroscopic ionoluminescence (IL) to investigate variations in emission spectra as a function of cumulative radiation dosing. Protons were selected for implantation to mimic the effect of natural radiation over geological timescales. All samples exhibited depletion in the UV-violet emission (3.2-3.4 eV) with increasing cumulative dose, whilst the red emission (1.8-1.9 eV) increased. A power-law relationship exists between the two emissions. It is inferred that the luminescence emission of quartz is indicative of its radiation history, and spectral analyses could be used to determine the utility of different quartz samples for optically stimulated luminescence dating (OSL) where the detection range is limited to 3.4-4.6 eV.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalRadiation Measurements
Volume46
Issue number1
Early online date12 Aug 2010
DOIs
Publication statusPublished - Jan 2011

Keywords

  • Spectroscopic ionoluminescence
  • Implantation
  • Protons
  • Quartz
  • Optically stimulated luminescence dating

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